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By: MarkJ - 22 September, 2011 (8:12 AM)
btTelecoms giant BT has confirmed to ISPreview.co.uk that they are NOT implementing Seamless Rate Adaptation (SRA) technology on their 'up to' 24Mbps ADSL2+ based broadband WBC services for UK ISPs and "there are no plans to do so either". Hopefully that will put a few long-running rumours to bed.

SRA is a feature of ADSL2+ broadband technologies that does a much faster and more reliable job of varying your line speed depending on its quality at any given time; BT's existing solution has a tendency to penalise occasional line problems with a more prolonged deterioration of speed. Some unbundled ( LLU ) operators are already known to be using SRA.

The good news is that BT do appear to be introducing something similar called BRAS Quantisation, which makes ADSL2+ lines work in a similar way to superfast FTTC ones by calculating your BRAS line speed each time the line re-syncs, instead of a few days later. In short it should be better at giving you the best available speed for your line.

Sadly those people who are still stuck on BT telephone exchanges that use the older 'up to' 8Mbps ADSL technology will not be able to benefit. Otherwise it's still a small but useful change.
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